Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030
Results are presented from the testing to failure of a 55-year-old prestressed concrete bridge with five continuous spans and a total length of 121.5 m. The bridge was situated in Kiruna in northern Sweden. Results are given from load, deflection and strain measurements during bending-shear tests of...
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Luleå tekniska universitet, Byggkonstruktion och brand
2020
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fttrafikverket:oai:DiVA.org:trafikverket-5742 2023-05-15T17:04:07+02:00 Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 Nilimaa, Jonny Nilforoush, Rasoul Bagge, Niklas Elfgren, Lennart 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:trafikverket:diva-5742 eng eng Luleå tekniska universitet, Byggkonstruktion och brand Luleå : Luleå University of Technology Trafikverkets forskningsportföljer orcid:0000-0002-1398-6118 orcid:0000-0001-9937-6072 orcid:0000-0001-8889-4237 orcid:0000-0002-0560-9355 http://urn.kb.se/resolve?urn=urn:nbn:se:trafikverket:diva-5742 urn:isbn:978-91-7790-693-3 urn:isbn:978-91-7790-694-0 info:eu-repo/semantics/openAccess Bridges Assessment Full-Scale Test to Failure Fracture Energy Bending Shear Punching Prestressed Concrete Modelling Measurements of Loads Deflections and Strains Other Civil Engineering Annan samhällsbyggnadsteknik Report info:eu-repo/semantics/report text 2020 fttrafikverket 2023-02-16T17:11:25Z Results are presented from the testing to failure of a 55-year-old prestressed concrete bridge with five continuous spans and a total length of 121.5 m. The bridge was situated in Kiruna in northern Sweden. Results are given from load, deflection and strain measurements during bending-shear tests of the girders and from a punching test of the slab. The testing was carried out in June 2014. Extensive assessment and modelling of the bridge with finite element methods have taken place and is summarized. The strength of the bridge was much higher than what could be found with ordinary code methods. The advanced non-linear models were, after calibration, able to predict the behaviour in a good way. In numerical assessments of concrete bridges, the value of the concrete tensile strength fct and the fracture energy GF plays an important role. However, mostly these properties are only estimated based on the concrete compressive strength using empirical formulae. In order to study methods to determine the concrete tensile strength and fracture energy for existing bridges, tests were carried out in 2019 on notched cylindrical concrete cores drilled out from the Kiruna Bridge. Different methods to determine the concrete fracture energy are discussed and recommendations are given for assessment procedures. Riktlinjer för tillståndsbedömning av betongbroar – Erfarenheter från provning till brott av en 55-årig spännbetongbro i Kiruna Report Kiruna Northern Sweden Trafikverket: Publication Database (DiVA) Kiruna |
institution |
Open Polar |
collection |
Trafikverket: Publication Database (DiVA) |
op_collection_id |
fttrafikverket |
language |
English |
topic |
Bridges Assessment Full-Scale Test to Failure Fracture Energy Bending Shear Punching Prestressed Concrete Modelling Measurements of Loads Deflections and Strains Other Civil Engineering Annan samhällsbyggnadsteknik |
spellingShingle |
Bridges Assessment Full-Scale Test to Failure Fracture Energy Bending Shear Punching Prestressed Concrete Modelling Measurements of Loads Deflections and Strains Other Civil Engineering Annan samhällsbyggnadsteknik Nilimaa, Jonny Nilforoush, Rasoul Bagge, Niklas Elfgren, Lennart Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
topic_facet |
Bridges Assessment Full-Scale Test to Failure Fracture Energy Bending Shear Punching Prestressed Concrete Modelling Measurements of Loads Deflections and Strains Other Civil Engineering Annan samhällsbyggnadsteknik |
description |
Results are presented from the testing to failure of a 55-year-old prestressed concrete bridge with five continuous spans and a total length of 121.5 m. The bridge was situated in Kiruna in northern Sweden. Results are given from load, deflection and strain measurements during bending-shear tests of the girders and from a punching test of the slab. The testing was carried out in June 2014. Extensive assessment and modelling of the bridge with finite element methods have taken place and is summarized. The strength of the bridge was much higher than what could be found with ordinary code methods. The advanced non-linear models were, after calibration, able to predict the behaviour in a good way. In numerical assessments of concrete bridges, the value of the concrete tensile strength fct and the fracture energy GF plays an important role. However, mostly these properties are only estimated based on the concrete compressive strength using empirical formulae. In order to study methods to determine the concrete tensile strength and fracture energy for existing bridges, tests were carried out in 2019 on notched cylindrical concrete cores drilled out from the Kiruna Bridge. Different methods to determine the concrete fracture energy are discussed and recommendations are given for assessment procedures. Riktlinjer för tillståndsbedömning av betongbroar – Erfarenheter från provning till brott av en 55-årig spännbetongbro i Kiruna |
format |
Report |
author |
Nilimaa, Jonny Nilforoush, Rasoul Bagge, Niklas Elfgren, Lennart |
author_facet |
Nilimaa, Jonny Nilforoush, Rasoul Bagge, Niklas Elfgren, Lennart |
author_sort |
Nilimaa, Jonny |
title |
Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
title_short |
Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
title_full |
Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
title_fullStr |
Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
title_full_unstemmed |
Testing to Failure of a 55-year-old Prestressed Concrete Bridge in Kiruna : Bending, Shear and Punching of Girders and Slab. Fracture Properties of Materials. Test Results, Modelling and Assessment. Final Report BBT 2017-030 |
title_sort |
testing to failure of a 55-year-old prestressed concrete bridge in kiruna : bending, shear and punching of girders and slab. fracture properties of materials. test results, modelling and assessment. final report bbt 2017-030 |
publisher |
Luleå tekniska universitet, Byggkonstruktion och brand |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:trafikverket:diva-5742 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna Northern Sweden |
genre_facet |
Kiruna Northern Sweden |
op_relation |
Trafikverkets forskningsportföljer orcid:0000-0002-1398-6118 orcid:0000-0001-9937-6072 orcid:0000-0001-8889-4237 orcid:0000-0002-0560-9355 http://urn.kb.se/resolve?urn=urn:nbn:se:trafikverket:diva-5742 urn:isbn:978-91-7790-693-3 urn:isbn:978-91-7790-694-0 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766058163387236352 |